//
//  Student.h
//  08_类的扩展
//
//  Created by dllo on 16/7/13.
//  Copyright © 2016年 dllo. All rights reserved.
//

#import <Foundation/Foundation.h>

@protocol GetMacBook <NSObject>
@required
// 购买MacBook
- (NSString *)buyMacBook:(NSString *)money;
@optional
// 开发票
- (void)drawABill;
@end

@interface Student : NSObject
@property (nonatomic, weak) id <GetMacBook> delegate;

// 查看微信时
- (void)seeWeChat;
@end
